Phase stability in high entropy alloys: Formation of solid-solution phase or amorphous phase

By Sheng Guo, C. Liu. 2011

2,025 citations recorded by the source corpus.

The alloy design for equiatomic multi-component alloys was rationalized by statistically analyzing the atomic size difference, mixing enthalpy, mixing entropy, electronegativity, valence electron concentration among constituent elements in solid solutions forming high entropy alloys and amorphous alloys. Solid solution phases form and only form when the requirements of the atomic size difference, mixing enthalpy and mixing entropy are all met. The most significant difference between the solid solution forming high entropy alloys and bulk metallic glasses lies in the atomic size difference. These rules provide valuable guidance for the future development of high entropy alloys and bulk metallic glasses.

Subfields: Aerospace Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/53dc5874c14379adc0a966cc2c7ca771bb71fc74

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Citations in the corpus

Ab initio phase stabilities and mechanical properties of multicomponent alloys: A comprehensive review for high entropy alloys and compositionally complex alloys (2019, background): “2011 Guo and Liu [8] Phase stability in high entropy alloys: Formation of solid-solution phase or amorphous phase 14”
The search for high entropy alloys: A high-throughput ab-initio approach (2017, background): “Figure 5 shows that three of the suggested descriptors: the electro-negativity difference (∆χ) [15], the atomic size difference (δ) [14] and the valence electron concentration (VEC) [19] (see [11] for formulas and values used in this article for these parameters), fail to pinpoint the quaternary and”
On Lattice Distortion in High Entropy Alloys (2018, background): “Later, the δ parameter was widely accepted as one of the empirical parameters to guide the design of HEAs because of the apparently good correlation between the value of the δ parameter and the general character of the phases formed in HEAs (Zhang et al., 2008; Guo and Liu, 2011; Ye et al., 2016b; H”